Detection and measurement of retinal vessels, in fundus images using amplitude modified second-order Gaussian filter

被引：192

作者：

Gang, L ^{[1
]}

Chutatape, O ^{[1
]}

Krishnan, SM ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 2002年 / 49卷 / 02期

关键词：

fundus image; matched filter; retinal vessel; vessel measurements;

D O I：

10.1109/10.979356

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this paper, the fitness of estimating vessel profiles with Gaussian function is evaluated and an amplitude-modified second-order Gaussian filter is proposed for the detection and measurement of vessels. Mathematical analysis is given and supported by a simulation and experiments to demonstrate that the vessel width can be measured in linear relationship with the "spreading factor" of, the matched filter when the magnitude coefficient of the filter is suitably assigned. The absolute value of vessel diameter can be determined simply by using a precalibrated line, which is typically required since images are always system dependent The experiment shows that the inclusion of the width measurement in the detection process can improve the performance of matched filter and result in a significant increase in success rate of detection.

引用

页码：168 / 172

页数：5

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